Clamp for use in building construction.



PATENTED DEC. 31, 1907.

11.3. WHITE. CLAMP FOR USE IN BUILDING'GONSTRUCTION.

APPLICATION FILED JUNE 19.1907.

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HERBERT E. WHITE, OF YOUNGSTOWN, OHIO, ASSIGNOR TO GENERAL FIREPROOFINGCOMPANY, A CORPORATION OF OHIO.

CLAMP FOR USE IN BUILDING CONSTRUCTION.

Specification of Letters Patent.

Patented Dec. 31', 1907.

Application filed June 19, 1907. Serial No. 379,706.

- citizen of the United States, and a resident of Youngstown, Ohio, haveinvented certain new and useful Improvements 1n Clamps for Use inBuilding Oonstruction, of which the following is a specification,accompanied by drawings.

This invention relates to a clamp for use in building construction, andis adapted to be used more particularly in concrete buildingconstruction.

The invention has for its object the providing of a simple means formaking an anchorage in ceilings from which to suspend peavy weights, ashanging shafting and pul- The nvention is also used for holding in placethe reinforcing metallic members in concrete construction r In theerection of buildings of this character it is necessary to maintain thesteel memhere in a certain relative position so as to insure theirproper location in the concrete body. It is also desirable to fastenthem together and this invention is used to perform at the same time theoffice of holding the steel parts in place with respect to theirposition in the concrete body, of fastening these parts togethdr and ofmaintaining the members at the required distance apart. The clam alsoserves to hold the bottom mold boar s in position while the concrete isbeing formed about the reinforcing frames or members.

The invention is fully illustrated in the accompanying drawings, inwhich,

Figure 1 is a longitudinal elevation partly in section of a reinforcedconcrete beam or girder embodying the invention; Fig. 2 is a transversesectional view of Fig. 1 on the line no .r; Fig. 3 is a transversesectional view of a modification of the invention. Fig. 4 is atransverse sectional view of another way of using the clamp shown inFig. 3. I

Referring to the drawings A represents the longitudinal base members ofa pair of me- 'tzl lhc reinforcing frames or members, and m thisinstance the members A comprise metallic rods or bars shown rectangularin cross section, although they may be any desired cross section.

Connected to the base members A by means of slats or tie pieces B arethe upper longitudinal members O, w 'ch, as shown, comprise centralportions 1),

outwardly extending portions E which extend from each end of the centralportions D anddiverge from the base members A, so that the distancebetween the base members and l the portions E continuously increases asthe outer ends of the reinforcing frames are approached. Preferably theextreme ends-F of the, upper member (3 extend substantially parallel tothe base A. In constructing the beam the central portion D of the memberC is placed upon the central portion of the base member A and the twomembers are tied together in any suitable manner. The slats B may besecured to the longitudinal members in any desired manner. If desired,addi tional reinforcing slats or ribs G may be provided extendingoutwardly from the upper members C and-suitably secured thereto in anydesired manner. frames are preferably arranged side by side and securedtogether by means of the clamps he reinforcing which form the object ofthe present invention.

In Fig. 2 one form of clamp is shown, comprising the upper jaw orclamping member J provided with grooves K adapted to receive thelongitudinal members A of the frames, and the lower clamping member Lalso provided with grooves 0 adapted to receive the longitudinal membersA. The grooves K and 0am constructed to substantially register with eachother and cooperate to tightly clampthe. members A in defined positionwhen the clamp it tightened up. The up er member J is provided with ascrew threa ed socket P adapted to receive the. end of the screwthreaded bolt Q, a screw-threaded aperture R in the lower or mainclamping member L. The bolt is rovided With'a head S by means of whic itmay be tightened, and between the head and the member L is adapted to besecured the mold board T. Preferably the up er clamping member or jaw Jis recessed at U toreceive the projecting head )ortion V of the mainclamp member L with a small clearance to prevent concrete from gettingdown around the screw-threaded bolt. It should not be necessary to makeany closer fit than can be made in ordinary foundry ractice. It will beseen that the rojection V forms a protecting collar for tile bolt, whichalso prevents the concrete from coming in contact therewith. v r

In Fig. 3 a modified form of clamp is I shown adapted to be used inconnection with reinforcing frames having two or more main memberslocated one'above the other. in this instance, the clamp is shown inconnection with two reinforcing frames each having the two longitudinalmembers A.-

The upper clamping member a is provided with the grooves b to receivethe upper base members A of the frames, while the lower clamping memberor main member 0 is provided with grooves d to receive the lowerlongitudinal members A of the frames. The upper member a is providedwith an interiorly' screw-threaded sleeve e adapted to receive thescrew-threaded bolt f. This sleeve 6 is adapted to extend down into thecentral aperture g in the member with a small amount of clearance, andthis construction protects the bolt from the concrete and prevents'theconcrete from getting down around the screw. If the longitudinal basemembers A of each frame'are apart as shown in Fig. 4, they can be heldin position when in the clamps by inserting between them any pieces ofmetal h of the desired thickness, as v waste ends of bars from the scrapheap.

According to this construction, after the concrete, cement, or othercementitious material is hardened sufliciently to firmly unite all theparts, the bolts and mold boards may be removed and the clamps formscrew threaded sockets for the reception of iasten-' ings for heavyweights or for ceilings.

erases I claim and desire to obtain by Letters Patent the following:

1. A clamp for concrete constructionscomprising the upper and lowermembers, one of said members having a socket,'the other member having aprojection fitting into the socket to form a closure therefor andprevent access of concrete to the socket, and a bolt passing centrallythrough said projection and socket, and screwing into the the lowermember being constructed to prevent access of concrete to the bolt.

in testimony whereof I have signed this specification in the presence oftwo sub scribing witnesses.

HERBERT E. VIHITE. Witnesses ORson D. KAISER, A. L, OBRIEN.

a bolt socket, and screwing into the upper member, 4

